Which cinematic touchstone is explicitly linked to the naming of these devices?

Answer

Back to the Future Part II

The widespread adoption of the term is directly tied to the 1989 film where Marty McFly uses a futuristic skateboard explicitly called a hoverboard that truly floats above the ground.

Which cinematic touchstone is explicitly linked to the naming of these devices?

#Videos

WHY ARE THEY CALLED HOVERBOARDS?! - YouTube

nameOrigindevicetransporthoverboard